13.0
Changing Components
43
© Baxi Heating UK Limited 2005
13.14
DHW Plate Heat Exchanger
1. Drain the boiler (see Section 13.1 paragraph 2 & 3).
2. Remove the four screws securing the plate heat
exchanger to the manifolds (Fig. 60).
NOTE:
Ensure nuts are not dislodged from the
manifolds.
3. Remove the plate heat exchanger cover (Fig. 61)
4. Remove the ’O’ rings from the manifolds and replace
with new ‘O’ rings (Fig. 61).
5. Taking care not to displace the ‘O’ rings fit the new
plate heat exchanger ensuring the nuts are retained in
the manifolds.
6. Refit the plate heat exchanger cover.
13.15
DHW Flow Switch
(Fig. 62)
1. Drain the boiler (see Section 13.1 paragraph 2 & 3).
2. Remove the DHW plate heat exchanger (see
section 13.14).
3. Disconnect the inline electrical connection.
4. Remove the clip at right hand side of the flow switch.
5. Undo the DHW inlet connection.
6. Remove the flow switch assembly and undo the
second clip.
7. Fit the new flow switch and reassemble in reverse
order.
8. Ensure that both clips are fully inserted from the
front.
9. Fit the DHW plate heat exchanger.
Fig. 60
Plate Heat Exchanger
Securing Screws
Fig. 61
Plate Heat
Exchanger Cover
‘O’ Rings
Fig. 62
Inline Electrical
Connection
Clip
Flow Switch
Manifold to Pump
Clip
DHW Inlet
Connection
Plate Heat Exchanger
